/* 
    该文件专门用于暴露一个store对象,整个应用只有一个store对象
*/
//引入createStore(createStore已被弃用改为configureStore)，专门用于创建redux中最为核心的store对象
import { legacy_createStore as createStore, applyMiddleware } from 'redux'
//引入汇总之后的reducer
import reducer from './reducers'
//引入redux-thunk,用于支持异步action
import thunk from 'redux-thunk'
//引入redux-devtools-extension --- 开发者工具
import { composeWithDevTools } from 'redux-devtools-extension'
//暴露store 
export default createStore(reducer, composeWithDevTools(applyMiddleware(thunk)))

